OCW2_EOI
OCW2_SELECT | OCW2_EOI | OCW2_SL | OCW2_ILS(irq & 7);
OCW2_SELECT | OCW2_EOI | OCW2_SL | OCW2_ILS(irq);
OCW2_SELECT | OCW2_EOI | OCW2_SL | OCW2_ILS(bit & 7);
OCW2_SELECT | OCW2_EOI | OCW2_SL | OCW2_ILS(bit);
if (data & OCW2_EOI) {
case OCW2_EOI: